[Solved] What will be the output of this Ruby code? words = ['cat', 'car', 'dog', 'deer'] groups = words.group_by { |w| w[0] } puts groups['c'].inspect | Ruby

Ruby - Enumerable and Collection Processing

What will be the output of this Ruby code?

words = ['cat', 'car', 'dog', 'deer']
groups = words.group_by { |w| w[0] }
puts groups['c'].inspect

Anil

B['dog', 'deer']

C['cat']

D['cat', 'car']

Step-by-Step Solution

Solution:

Step 1: Group words by first letter
The block groups words by their first character: 'c' or 'd'.
Step 2: Identify words starting with 'c'
Words 'cat' and 'car' start with 'c', so groups['c'] is ['cat', 'car'].
Final Answer:
['cat', 'car'] -> Option D
Quick Check:
groups['c'] contains words starting with 'c' [OK]

Quick Trick: Access groups by exact key from block return [OK]

Common Mistakes:

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